To run .rar files, programs like WinRAR and 7-Zip are recommended. Users can download and install these programs, then extract files by right-clicking on them. After testing both, it's suggested to keep the preferred program and uninstall the other. A user inquired about opening .l6t files, which are patches for Line 6 POD guitar pedals. It was clarified that specific software from Line 6 is needed to manage these files, and they are only useful for those who own a POD. Additionally, there was a question about recording live video from a camera to a computer via USB, seeking advice on suitable software for this purpose.